EP3595366A1 - Procédé d'accès au réseau, terminal, réseau d'accès et réseau central - Google Patents

Procédé d'accès au réseau, terminal, réseau d'accès et réseau central Download PDF

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Publication number
EP3595366A1
EP3595366A1 EP17903824.5A EP17903824A EP3595366A1 EP 3595366 A1 EP3595366 A1 EP 3595366A1 EP 17903824 A EP17903824 A EP 17903824A EP 3595366 A1 EP3595366 A1 EP 3595366A1
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EP
European Patent Office
Prior art keywords
network
access
identifier
network slice
slice
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Granted
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EP17903824.5A
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German (de)
English (en)
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EP3595366B1 (fr
EP3595366A4 (fr
Inventor
Jingwang Ma
Zhiming Li
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication of EP3595366A4 publication Critical patent/EP3595366A4/fr
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W60/00Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W40/00Communication routing or communication path finding
    • H04W40/24Connectivity information management, e.g. connectivity discovery or connectivity update
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W60/00Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events

Definitions

  • This disclosure relates to the field of communications technologies, and in particular, to a network access method, a terminal, an access network, and a core network.
  • a network may be divided into a plurality of network slices based on supported service scenarios and services, and a terminal may access a network slice to obtain a network service provided by the network slice.
  • network slices include a type-A network slices, a type-B network slice, and a type-C network slice.
  • the type-A network slice has a dedicated access network and a dedicated core network
  • the type-B network slice has a common access network and a dedicated core network
  • the type-C network slice has a common access network and a common core network.
  • an access mode of the terminal varies.
  • the terminal randomly uses an access mode to initiate network access to a network slice that provides the network service.
  • the terminal cannot access the network slice to obtain the service.
  • embodiments of this disclosure provide a network access method, a terminal, an access network, and a core network.
  • the technical solutions are as follows.
  • a network access method including:
  • the terminal obtains, based on the network service identifier, the network slice type identifier corresponding to a service identifier, and then accesses the network slice based on the access mode corresponding to the network slice type, thereby avoiding unavailability of the service caused by a failure to correctly access the network slice, and improving service quality.
  • the determining, based on the network slice type identifier, an access mode corresponding to a network slice type includes: determining, by the terminal based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through a dedicated access network and a dedicated core network, the network slice corresponding to the network slice identifier; or determining, by the terminal based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through a common access network and a dedicated core network, the network slice corresponding to the network slice identifier; or determining, by the terminal based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through a common access network and a common core network, the network slice corresponding to the network slice identifier.
  • a plurality of access modes are determined based on the network slice type identifier, so that more choices are available in accessing the network slice.
  • the access mode is to access, through a dedicated access network and a dedicated core network, the network slice corresponding to the network slice identifier
  • the access information further includes a dedicated access network identifier
  • the accessing, based on the access mode corresponding to the network slice type, a network slice corresponding to the network slice identifier includes: receiving, by the terminal, a broadcast message sent by at least one access network, where the broadcast message includes an access network identifier; determining, by the terminal, in the at least one access network identifier and based on the dedicated access network identifier, a dedicated access network identifier the same as the dedicated access network identifier; sending, by the terminal, a network connection request, where the network connection request includes the dedicated access network identifier; establishing, by the terminal, a network connection to a dedicated access network corresponding to the dedicated access network identifier; and sending, by the terminal, a network registration request to the dedicated access network, where the network registration request carries the network slice identifier and a
  • the accessing, based on the access mode corresponding to the network slice type, a network slice corresponding to the network slice identifier includes: establishing, by the terminal, a network connection to a first common access network; and sending, by the terminal, a network registration request to the first common access network, where the network registration request carries the network slice identifier and a user identifier, and the network registration request is used to request a second dedicated core network corresponding to the network slice identifier to perform network registration on a terminal based on the user identifier.
  • the access mode is to access, through a common access network and a common core network, the network slice corresponding to the network slice identifier
  • the access information further includes a network service type
  • the accessing, based on the access mode corresponding to the network slice type, a network slice corresponding to the network slice identifier includes: establishing, by the terminal, a network connection to a second common access network, and getting registered with the common core network; determining, by the terminal, a service request message; and sending, by the terminal, the service request message to the common core network through the second common access network, where the service request message carries the network slice identifier, and the service request message is used to request access to the network slice corresponding to the network slice identifier.
  • the network slice is accessed by using the access mode corresponding to the network slice type, thereby improving a network access success rate, avoiding unavailability of the service caused by a failure to correctly access the network slice, and further improving service quality.
  • the access information further includes roaming indication information; and before the accessing, based on the access mode corresponding to the network slice type, a network slice corresponding to the network slice identifier, the method further includes: detecting, by the terminal, a current network status; and performing, if the current network status is a roaming state and the roaming indication information is to allow the terminal to roam, the step of accessing, by the terminal based on the network slice type identifier by using an access mode corresponding to the network slice type, the network slice corresponding to the network slice identifier; or if the current network status is a non-roaming state, accessing, by the terminal based on the network slice type identifier by using an access mode corresponding to the network slice type, the network slice corresponding to the network slice identifier.
  • the terminal before accessing the network slice, the terminal detects the current network status, thereby avoiding access operations performed due to failure to access the network slice caused by limitations of the terminal itself, and saving resources.
  • a network access method including: establishing, by an access network, a network connection to a terminal; receiving, by the access network, a network registration request sent by the terminal, where the network registration request includes a network slice identifier and a user identifier; determining, by the access network, a core network corresponding to the network slice identifier; and sending, by the access network, the network registration request to the core network, where the network registration request is used to request the core network to perform network registration on the terminal based on the user identifier, so that the terminal accesses a network slice corresponding to the network slice identifier.
  • the access network after establishing the network connection to the terminal, the access network sends the network registration request to the core network, and the core network performs network registration on the terminal, thereby ensuring the terminal to access the network slice and improving a network access success rate.
  • the establishing a network connection to a terminal includes: sending, by the access network, a broadcast message to the terminal, where the broadcast message includes an access network identifier, and the broadcast message is used for the terminal to determine an access network; receiving a network connection request sent by the terminal, where the network connection request includes the access network identifier; and establishing, by the access network, the network connection to the terminal based on the network connection request.
  • the access network sends the broadcast message to the terminal, so that the terminal can establish a network connection to the access network based on the broadcast message and it is possible for the terminal to access the network slice.
  • the network connection request includes the network slice identifier
  • the method further includes: configuring, by the access network, a network based on the network slice identifier, to provide a service corresponding to the network slice type to the terminal based on the configured network.
  • network configuration is performed based on the network slice identifier, so that the service can be provided to the terminal quickly.
  • the determining a core network corresponding to the network slice identifier includes: sending, by the access network, a first query request to a slice selection function entity, where the first query request includes the network slice identifier; and receiving, by the access network, a core network address corresponding to the network slice identifier and sent by the slice selection function entity.
  • the core network is determined by the slice selection function entity, thereby making the determined core network more accurate and further improving a network access success rate.
  • a network access method including: sending, by an access network, a broadcast message to the terminal, where the broadcast message includes an access network identifier, and the broadcast message is used for the terminal to determine an access network; receiving a network connection request sent by the terminal, where the network connection request includes the access network identifier; and establishing, by the access network, the network connection to the terminal based on the network connection request.
  • the method further includes: receiving, by the access network, a network registration request sent by the terminal, where the network registration request includes a network slice identifier and a user identifier; determining, by the access network, a first dedicated core network corresponding to the network slice identifier; and sending, by the access network, the network registration request to the first dedicated core network, where the network registration request is used to request the first dedicated core network to perform network registration on the terminal based on the user identifier, so that the terminal accesses a network slice corresponding to the network slice identifier.
  • the access network sends the broadcast message to the terminal, so that the terminal can establish a network connection to the access network based on the broadcast message and it is possible for the terminal to access the network slice.
  • the access network sends the network registration request to the core network, and the core network performs network registration on the terminal, thereby ensuring the terminal to access the network slice and improving a network access success rate.
  • the network connection request includes the network slice identifier
  • the method further includes: configuring, by the access network, a network based on the network slice identifier, to provide a service corresponding to the network slice type to the terminal based on the configured network.
  • network configuration is performed based on the network slice identifier, so that the service can be provided to the terminal quickly.
  • a network access method including: receiving, by a core network, a network registration request sent by an access network, where the network registration request includes a network slice identifier and a user identifier; determining, by the core network, a network slice corresponding to the network slice identifier; and performing, by the core network, network registration on a terminal based on the user identifier, so that the terminal can access the network slice.
  • network registration is performed on the terminal after the network registration request is received, thereby enabling the terminal to smoothly access the network slice, and improving a network access success rate and service quality.
  • the performing network registration on a terminal based on the user identifier includes: obtaining, by the core network, subscription information of a user based on the user identifier; and performing, by the core network, network registration on the terminal when it is determined based on the subscription information of the user that the terminal is allowed to access the network slice corresponding to the network slice identifier.
  • network registration is performed on the terminal based on the subscription information of the user, thereby further ensuring the terminal to access a correct network slice, and improving a network access success rate.
  • a network access method including: receiving, by a core network, a network service request message sent by a common access network, where the service request message includes a network slice identifier and a user identifier; and determining, by the core network, a network slice corresponding to the network slice identifier, so that a terminal accesses the network slice.
  • the network slice is determined based on the network service request message, thereby making the determined network slice more accurate and improving a network access success rate.
  • the determining a network slice corresponding to the network slice identifier includes: sending, by the core network, a second query request to a slice selection function entity, where the second query request includes the network slice identifier; and receiving, by the core network, a network slice address corresponding to the network slice identifier and sent by the slice selection function entity.
  • the network slice is determined by the slice selection function entity, thereby improving accuracy of the determined network slice and further ensuring the terminal to smoothly access the network slice.
  • a terminal where the terminal has functions of performing the actions of the terminal described in the example of the network access method.
  • the function may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the foregoing function.
  • a structure of the terminal includes a processing unit and a communications unit.
  • the processing unit is configured to support the terminal in performing a corresponding function in the foregoing methods.
  • the communications unit is configured to support communication between the terminal and another device.
  • the terminal may further include a storage unit, and the storage unit is configured to couple to the processing unit and store a necessary program instruction and data for the terminal.
  • the processing unit may be a processor
  • the communications unit may be a transceiver
  • the storage unit may be a memory.
  • a structure of the terminal includes an identifier obtaining unit, an information obtaining unit, a determining unit, a network slice access unit, and a detection unit.
  • Such units can perform corresponding functions in the example of the network access method. For details, refer to the detailed description in the method example, and no repeated description is given.
  • an access network has functions of performing the actions of the access network described in the example of the network access method.
  • the functions may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the foregoing function.
  • a structure of the access network includes a processing unit and a communications unit, where the processing unit is configured to support the access network in performing corresponding functions in the method.
  • the communications unit is configured to support communication between the access network and other devices.
  • the access network may further include a storage unit, and the storage unit is configured to couple to the processing unit and store a necessary program instruction and data of the access network.
  • the processing unit may be a processor
  • the communications unit may be a transceiver
  • the storage unit may be a memory.
  • a structure of the access network includes a network connection unit, a receiving unit, a determining unit, and a sending unit.
  • Such units can perform corresponding functions in the example of the network access method. For details, refer to the detailed description in the method example, and no repeated description is given.
  • an access network where the access network has functions of performing the actions of the access network described in the example of the network access method.
  • the functions may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the foregoing function.
  • a structure of the access network includes a processing unit and a communications unit, where the processing unit is configured to support the access network in performing corresponding functions in the method.
  • the communications unit is configured to support communication between the access network and other devices.
  • the access network may further include a storage unit, and the storage unit is configured to couple to the processing unit and store a necessary program instruction and data of the access network.
  • the processing unit may be a processor
  • the communications unit may be a transceiver
  • the storage unit may be a memory.
  • a structure of the access network includes a sending unit, a receiving unit, and a network connection unit.
  • Such units can perform corresponding functions in the example of the network access method. For details, refer to the detailed description in the method example, and no repeated description is given.
  • a core network has functions of performing the actions of the core network described in the example of the network access method.
  • the function may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the foregoing function.
  • a structure of the core network includes a processing unit and a communications unit, where the processing unit is configured to support the core network in performing corresponding functions in the method.
  • the communications unit is configured to support communication between the core network and other devices.
  • the core network may further include a storage unit, and the storage unit is configured to couple to the processing unit and store a necessary program instruction and data of the core network.
  • the processing unit may be a processor
  • the communications unit may be a transceiver
  • the storage unit may be a memory.
  • a structure of the core network includes a receiving unit, a determining unit, and a network registration unit.
  • Such units can perform corresponding functions in the example of the network access method. For details, refer to the detailed description in the method example, and no repeated description is given.
  • a core network has functions of performing the actions of the core network described in the example of the network access method.
  • the functions may be implemented by hardware, or may be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the foregoing function.
  • a structure of the core network includes a processing unit and a communications unit, where the processing unit is configured to support the core network in performing corresponding functions in the method.
  • the communications unit is configured to support communication between the core network and other devices.
  • the core network may include a storage unit, and the storage unit is configured to couple to the processing unit and store a necessary program instruction and data of the core network.
  • the processing unit may be a processor
  • the communications unit may be a transceiver
  • the storage unit may be a memory.
  • a structure of the core network includes a receiving unit and a determining unit.
  • Such units can perform corresponding functions in the example of the network access method. For details, refer to the detailed description in the method example, and no repeated description is given.
  • a network access system includes any one of the following network devices: the terminal described in the sixth aspect, the access network described in the seventh or eighth aspect, or the core network described in the ninth or tenth aspect.
  • the system may further include other devices that interact with the terminal, the access network, or the core network in the solution provided in an embodiment of this disclosure.
  • a computer-readable medium is provided, and is configured to store computer software instructions used by the terminal.
  • the computer-readable medium includes a program designed for executing the sixth aspect.
  • a computer-readable storage medium is provided, and is configured to store computer software instructions used by interface devices of the access network.
  • the computer-readable storage medium includes a program designed for executing the seventh or eighth aspect.
  • a computer-readable storage medium is provided, and is configured to store computer software instructions used by the core network.
  • the computer-readable storage medium includes a program designed for executing the ninth or tenth aspect.
  • a computer program product that includes instructions is provided, and when the computer program product runs on a computer, the computer is enabled to execute the method in the foregoing aspects.
  • the terminal Based on the network service identifier, the terminal obtains the access information that includes at least the network slice type identifier, and then accesses the network slice based on the access mode corresponding to the network slice type identifier, thereby avoiding unavailability of the service caused by a failure to correctly access the network slice and improving a network connection success rate and service quality.
  • a “module” mentioned in this specification is a program or an instruction that is stored in a memory and can implement some functions.
  • a “unit” mentioned in this specification is a functional structure divided according to logic. The “unit” may be implemented by only hardware, or implemented by a combination of software and hardware.
  • 5G network services will cover a plurality of application scenarios such as MBB (Mobile BroadBand, mobile broadband), V2V (Vehicle to Vehicle, vehicle to vehicle), MTC (Machine Type Communication, machine type communication), and ITS (Intelligent Transfer System, intelligent transport system).
  • a conventional network architecture is a single-service user network, and can provide only one type of network service but cannot meet requirements of 5G services.
  • a network in a 5G network system is divided into a plurality of network slices based on supported application scenarios, network services, and the like, and is constructed in a form of "customized function + generalized hardware".
  • a network slice based on customized software allows an operator to provide the network as a service to users, and freely and flexibly combine network performance indicators such as rate, capacity, coverage, delay, reliability, security, and availability to meet requirements of 5G services.
  • the operator can provide customized network slices for different users on a same infrastructure. For example, the operator provides an MBB network slice for mobile bandwidth users, and provides an MTC network slice for machine type communication users, or the like. Based on network functions, network slices are classified into three types: a type-A network slice with a dedicated access network and a dedicated core networks, a type-B network slice with a common access network and a dedicated core network, and a type-C network slice with a common access network and a common core network. Access modes of different types of network slices are different.
  • the terminal For the type-A network slice, the terminal first accesses the dedicated access network of the network slice, and then sends a network registration request to the dedicated access network.
  • the dedicated access network sends the network registration request to the dedicated core network. After the dedicated core network completes network registration, the terminal can access the network slice to use a network service provided by the network slice.
  • the terminal For the type-B network slice, the terminal first accesses the common access network of the operator, and then sends a network registration request to the common access network.
  • the common access network determines a dedicated core network based on a service required by the terminal, and sends the network registration request to the dedicated core network. After the dedicated core network completes the network registration, the terminal can access the network slice to use the network service provided by the network slice.
  • the terminal For the type-C network slice, the terminal first accesses the common access network of the operator, and then sends a network registration request to the common access network.
  • the common access network sends the network registration request to the common core network.
  • the terminal After the common core network completes network registration and determines the network slice based on the network service required by the terminal, the terminal can access the network slice to use the network service provided by the network slice.
  • a 5G network architecture deployed by the operator generally includes the above three types of network slices, but the network services accessed by different applications in the terminal are provided by different types of network slices. For example, an application A needs to access the type-A network slice, and an application B needs to access the type-B network slice. Therefore, the terminal cannot access a corresponding network slice based on service requirements, and therefore, cannot obtain the required service.
  • the network access system includes: a terminal 101, a dedicated access network 102, a first dedicated core network 103, a network slice 104, a first common access network 105, a second dedicated core network 106, a second common access network 107, and a common core network 108.
  • the terminal 101 is a device with a communication function, and includes a mobile phone, a fixed phone, or the like.
  • a security chip is disposed to store subscription information of a user.
  • the security chip may be a SIM (Subscriber Identification Module, subscriber identification module) card, an eSIM (embedded SIM, embedded SIM) card, or the like.
  • the dedicated access network 102 is an access network exclusively used by a network slice a104
  • the first dedicated core network 103 is a core network exclusively used by a network slice a104
  • the first common access network 105 is an access network shared by a plurality of network slices 104 including a network slice b and a network slice c
  • the second common core network 106 is a core network shared by a plurality of network slices 104 including a network slice d and a network slice e.
  • the dedicated access network 102 and the first dedicated core network 103 are in one-to-one correspondence. After the terminal accesses the dedicated access network 102, the dedicated access network 102 may access the first dedicated core network 103, and then access to the network slice a104.
  • the first common access network 105 corresponds to a plurality of second dedicated core networks 106 including the second dedicated core network a and the second dedicated core network b.
  • Each second dedicated core network 106 corresponds to a network slice 104.
  • the second dedicated core network a corresponds to the network slice b
  • the second dedicated core network b corresponds to the network slice c.
  • the second common access network 107 corresponds to the common core network 108, and each common core network corresponds to a plurality of network slices.
  • the second common core network 108 corresponds to a plurality of network slices including the network slice d and the network slice e.
  • An embodiment of this disclosure provides a network access method. The method is implemented based on the network access system shown in FIG. 1 . As shown in FIG. 2 , a procedure of the method provided in the embodiment of this disclosure includes the following steps.
  • a terminal obtains a network service identifier of a requested network service.
  • the network service identifier is used to identify a network service type supported by a network slice.
  • Network service types include but are not limited to: a V2X (Vehicle to X, communication between a vehicle and the outside) type, a D2D (Device-to-Device, device-to-device communication) type, an MBB type (Mobile Broadband, mobile broadband), and an IoT type (Internet of Thing, Internet of things).
  • a network slice that supports a network service type generally supports a plurality of network services of this network service type.
  • services supported by the MBB type include: a PDU session service and an SMS service.
  • an application needs to obtain a network service due to service requirements in a running process, and the application may send a network service request to the terminal.
  • the network service request carries at least a network service identifier.
  • the terminal obtains, from the network service request, a network service identifier required by the application.
  • the application is any application in the terminal, and may be a navigation application, a communication application, or a shopping application. Certainly, if the application needs only one type of network service, the terminal may store a correspondence between an application identifier and the network service identifier in a security chip.
  • the application may send a network service request to the terminal, where the network service request carries the application identifier.
  • the terminal may obtain a network service identifier corresponding to the application identifier from the security chip, where the network service identifier is the network service identifier of the network service requested by the application.
  • the terminal when the terminal itself needs to access the network and obtain the network service, the terminal may determine the network service identifier based on the requested network service.
  • the terminal obtains access information based on the network service identifier.
  • the terminal maintains a configuration information database, where the configuration information database is stored in the security chip, and the security chip may be a SIM card, an eSIM card, or the like.
  • the configuration information database stores access information, and the access information is used for the terminal to access the network slice.
  • the access information includes subscription information of a network slice allowed to be used. Further, the access information may further include public subscription information.
  • the public subscription information includes a user identifier, a key used for user authentication, an identifier of a network slice that the terminal accesses by default, or the like.
  • the user identifier may be an IMSI (International Mobile Subscriber Identification Number, international mobile subscriber identification number) or the like.
  • the key used for user authentication is a key generated by an operator when the user subscribes to a network service of the operator from the operator. The key is used to verify whether the user can access the network of the operator.
  • the identifier of the network slice that the terminal accesses by default is an identifier of the network slice to be accessed by the terminal when the terminal receives no network service request sent by any application after the terminal is started.
  • the subscription information of the network slice allowed to be used varies depending on a type of the network slice.
  • the subscription information of the network slice allowed to be used includes a network slice identifier, a network slice type identifier, a network service identifier, and a dedicated access network identifier, and optionally, may further include roaming indication information.
  • the subscription information of the network slice allowed to be used includes a network slice identifier, a network slice type identifier, and a network service identifier, and optionally, may further include roaming indication information.
  • the subscription information of the network slice allowed to be used includes a network slice identifier, a network slice type identifier, and a network service identifier, and optionally, may further include roaming indication information and a network service type.
  • the roaming indication information includes allowing the terminal to roam or not allowing the terminal to roam.
  • the network service type is used to identify a network service supported by the network, including but not limited to, a PDU (Protocol Data Unit, protocol data unit) Session (session), an SMS (Short Message Service, short message service), or a location service.
  • each network slice is used to provide one type of network service
  • the network service available to the terminal may be determined by means of user subscription, and each type of network service has a network service identifier. Therefore, in other words, the configuration information database stores a correspondence among the network service identifier, the network slice identifier, and the network slice type identifier. Therefore, after obtaining the network service identifier, the terminal may obtain the access information corresponding to the network service identifier from the configuration information database.
  • each terminal has a home network.
  • the home network is used to determine a current network status of the terminal, and can be identified by using a network identifier configured in the security chip of the terminal.
  • the network identifier includes an MCC (Mobile Country Code, mobile country code) and an MNC (Mobile Network Code, mobile network code).
  • the current network status of the terminal includes a roaming state, a non-roaming state, and the like. While the terminal is in use, the terminal may detect an MCC and an MNC that are broadcast by a local mobile network of the terminal.
  • the current network status is a roaming state; or if the MCC and the MNC corresponding to the local network are the same as the MCC and the MNC stored in the security chip of the terminal, it may be determined that the current network status is a non-roaming state. Whether the terminal can obtain the network service depends on the current network status and the roaming indication information. Specifically, the following cases may exist.
  • the terminal determines, based on a network slice type identifier, an access mode corresponding to a network slice type.
  • the terminal determines, based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through the dedicated access network and the dedicated core network, the network slice corresponding to the network slice identifier, that is, determines that the access mode corresponding to the network slice type is to access the type-A network slice. Therefore, the terminal accesses, by using the access mode corresponding to the type-A network slice, the network slice corresponding to the network slice identifier. For a specific process, refer to the following steps 204 to 210.
  • the terminal receives a broadcast message sent by at least one access network.
  • access networks are divided into two types.
  • One type is a dedicated access network
  • the other type is a common access network.
  • the dedicated access network broadcasts a message in a system at preset intervals, where the message carries an access network identifier.
  • the common access network also broadcasts a message in the system at preset intervals, where the message carries the access network identifier and the like.
  • the access network identifier may be an MCC, an MNC, or the like.
  • the preset interval may be set as actually required, for example, 1 second, 2 seconds, or the like.
  • the terminal determines, in at least one access network identifier based on the dedicated access network identifier, a dedicated access network identifier the same as the dedicated access network identifier.
  • the terminal When receiving the broadcast message sent by at least one access network including the dedicated access network and the common access network, the terminal determines, in at least one access network identifier based on the dedicated access network identifier in the access information, a dedicated access network identifier the same as the dedicated access network identifier.
  • the terminal sends a network connection request to the dedicated access network.
  • the terminal may send a network connection request to the dedicated access network corresponding to the dedicated access network identifier, where the network connection request carries at least the network slice identifier.
  • the terminal When receiving the network connection request, the terminal establishes a network connection to the dedicated access network.
  • the dedicated access network Based on the network connection request, the dedicated access network establishes a network connection to the terminal, and configures a network based on the network slice identifier, to quickly provide a service corresponding to the network slice type to the terminal based on the configured network.
  • the terminal sends a network registration request to the dedicated access network.
  • the terminal may send the network registration request to the dedicated access network based on the established network connection, where the network registration request carries at least the network slice identifier, the user identifier, and the like.
  • the dedicated access network When receiving the network registration request, the dedicated access network sends the network registration request to a first dedicated core network.
  • the dedicated access network corresponds to the first dedicated core network.
  • the dedicated access network may send the network registration request to the corresponding first dedicated core network.
  • the first dedicated core network When receiving the network registration request, the first dedicated core network performs network registration on the terminal.
  • a subscriber database is stored on a network side.
  • the subscriber database stores subscription information of a plurality of users.
  • the first dedicated core network obtains subscription information of a user from the subscriber database based on the user identifier carried in the network registration request. If the subscription information of the user includes the network slice identifier carried in the network registration request, it may be determined that the terminal is allowed to access the network slice corresponding to the network slice identifier, and the first dedicated core network performs network registration on the terminal.
  • the network registration includes performing authentication on the user and performing location registration on the terminal. When the first dedicated core network completes the network registration on the terminal, the terminal can access the network slice corresponding to the network slice identifier.
  • the terminal may send a service request message to the network slice through the dedicated access network and the first dedicated core network, and then the network slice provides the requested network service for the terminal.
  • the terminal may determine the service request message based on the network service type requested by the application, where the service request message carries at least the user identifier. For example, if the network service type is a packet data connection, the terminal may determine that the service request message is a packet data establish request; or if the network service type is an SMS service, determine that the service request message is an SMS request.
  • the terminal sends the service request message to the first dedicated core network through the dedicated access network, and the first dedicated core network further processes the service request, thereby completing the network service requested by the terminal.
  • the application needs to obtain a network service in a running process.
  • the application may send a network service request to a network protocol stack in the terminal, where the network service request carries at least a network service identifier.
  • the network protocol stack obtains access information from the configuration information database, where the access information carries the network service identifier, a network slice identifier, a dedicated access network identifier, a network slice type identifier, and the like.
  • the network protocol stack determines the identifier of the network slice to be accessed.
  • the terminal receives in real time a broadcast message sent by a 5G network system, and establishes a connection to a dedicated access network corresponding to the dedicated access network identifier. Subsequently, the terminal sends a network registration request to the dedicated access network, where the network registration request carries at least a user identifier, the network slice identifier, and the like, and is sent by the dedicated access network to a first dedicated core network.
  • the first dedicated core network obtains user subscription information corresponding to the user identifier from a subscriber database of a user.
  • the first dedicated core network performs network registration on the terminal.
  • the network slice provides a network service for the application in the terminal by performing a corresponding network service operation.
  • the terminal based on the network service identifier, obtains the access information that includes at least the network slice type identifier, and then accesses the network slice based on the access mode corresponding to the network slice type identifier, thereby avoiding unavailability of the service caused by a failure to correctly access the network slice and improving a network connection success rate and service quality.
  • An embodiment of this disclosure provides a network access method. The method is implemented based on the network access system shown in FIG. 1 . As shown in FIG. 4 , a procedure of the method provided in the embodiment of this disclosure includes the following steps.
  • a terminal obtains a network service identifier of a requested network service.
  • step 201 Detailed implementation of this step is the same as that of step 201 described above. For details, refer to step 201, and no repeated description is given herein.
  • the terminal obtains access information based on the network service identifier.
  • step 202 Detailed implementation of this step is the same as that of step 201 described above.
  • step 202 Detailed implementation of this step is the same as that of step 201 described above.
  • step 202 Detailed implementation of this step is the same as that of step 201 described above.
  • the terminal determines, based on a network slice type identifier, an access mode corresponding to a network slice type.
  • the terminal determines, based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through the first common access network and the second dedicated core network, a network slice corresponding to a network slice identifier, that is, determines that the access mode corresponding to the network slice type is to access a type-B network slice. Therefore, the terminal accesses, by using the access mode corresponding to the type-B network slice, the network slice corresponding to the network slice identifier. For a specific process, refer to the following steps 404 to 407.
  • the terminal establishes a network connection to a first common access network.
  • a security chip of the terminal stores an MCC and an MNC
  • the MCC and the MNC may constitute a PLMN (Public Land Mobile Network, public land mobile network), and the PLMN may be used to distinguish networks of different operators.
  • the terminal Based on the MCC and the MNC that are obtained from the security chip, the terminal receives messages that are broadcast by the dedicated access network and the common access network in a 5G network system, and determines that an access network whose MCC and MNC are the same as those obtained from the security chip is the first common access network to be accessed.
  • the terminal establishes a network connection to the first common access network by sending a network connection request to the first common access network.
  • the terminal sends a network registration request to the first common access network.
  • the terminal may send the network registration request to the first common access network, where the network registration request carries at least the network slice identifier, a user identifier, and the like.
  • the first common access network sends the network registration request to a second dedicated core network.
  • the first common access network corresponds to a plurality of second dedicated core networks.
  • Each second dedicated core network corresponds to one network slice.
  • the common access network may determine, based on the network slice identifier and in the plurality of second dedicated core networks, a second dedicated core network that the terminal needs to access.
  • the first common access network sends a first query request to a slice selection function entity, where the first query request includes a network slice identifier.
  • the slice selection function entity determines a second dedicated core network to which the network slice corresponding to the network slice identifier belongs, and provides a network address of a function entity of the second dedicated core network to the first common access network.
  • This process is actually equivalent to: providing the network address of the network function entity responsible for network registration in the second dedicated core network to the first common access network; and when receiving the network address of the network function entity responsible for network registration in the second dedicated core network, the first common access network can determine the second dedicated core network that the terminal needs to access.
  • the first common access network stores the network slice identifier and configuration information of an address of a corresponding network function entity of the second dedicated core network. Based on the configuration information and the network slice identifier, the first common access network determines a network address of the network function entity responsible for network registration, and uses a second core network corresponding to the network address as a second dedicated core network that the terminal needs to access.
  • the first common access network may send the network registration request to the second dedicated core network.
  • the second dedicated core network performs network registration on the terminal.
  • a subscriber database is stored on a network side.
  • the subscriber database stores user subscription information the same as that in a configuration information database.
  • the second dedicated core network obtains subscription information of a user from the subscriber database based on the user identifier carried in the network registration request. If the subscription information of the user is the same as information carried in the network registration request, it may be determined that the terminal is allowed to access the network slice corresponding to the network slice identifier, and the second dedicated core network performs network registration on the terminal.
  • the network registration includes performing authentication on the user, performing location registration on the terminal, and the like.
  • the terminal can access the network slice corresponding to the network slice identifier. Subsequently, the network slice can provide network services for the application in the terminal by performing corresponding network service operations, including: the terminal may determine the service request message based on the network service type requested by the application, where the service request message carries at least the user identifier. For example, if the network service type is a packet data connection, the terminal may determine that the service request message is a packet data establish request; or if the network service type is an SMS service, determine that the service request message is an SMS request. The terminal sends the service request message to the dedicated core network through the dedicated access network, and the second dedicated core network further processes the service request, thereby completing the network service requested by the terminal.
  • the application needs to obtain a network service in a running process.
  • the application may send a network service request to a network protocol stack in the terminal, where the network service request carries at least a network service identifier.
  • the network protocol stack determines a corresponding configuration information database.
  • the terminal may obtain access information from the configuration information database, where the access information carries the network service identifier, the network slice identifier, the network slice type identifier, and the like. Based on the access information, the terminal determines an identifier of the network slice to be accessed.
  • the terminal From the security chip, the terminal obtains the PLMN that includes the MCC and the MNC, and based on the broadcast message sent by the access network in the PLMN and the 5G network system, determines the first common access network to be accessed, and further establishes a network connection to the first common access network. Subsequently, the terminal sends a network registration request to the first common access network, where the network registration request carries at least a user identifier, the network slice identifier, and the like. Based on the network slice identifier, the first common access network determines a second dedicated core network, and sends the network registration request to the second dedicated core network. When receiving the network registration request, the second dedicated core network obtains user subscription information from a subscriber database of a user.
  • the second dedicated core network When it is determined based on the user subscription information that the terminal is allowed to access a network slice corresponding to the network slice identifier, the second dedicated core network performs network registration on the terminal. When completion of the network registration, the terminal accesses the network slice. Subsequently, the network slice provides network services for the application in the terminal by performing corresponding network service operations.
  • the terminal based on the network service identifier, obtains the access information that includes at least the network slice type identifier, and then accesses the network slice based on the access mode corresponding to the network slice type identifier, thereby avoiding unavailability of the service caused by a failure to correctly access the network slice and improving a network connection success rate and service quality.
  • An embodiment of this disclosure provides a network access method. The method is implemented based on the system shown in FIG. 1 . As shown in FIG. 6 , a procedure of the method provided in this embodiment includes the following steps.
  • a terminal obtains a network service identifier of a requested network service.
  • step 201 Detailed implementation of this step is the same as that of step 201 described above. For details, refer to step 201, and no repeated description is given herein.
  • the terminal obtains access information based on the network service identifier.
  • step 202 Detailed implementation of this step is the same as that of step 202 described above. For details, refer to step 202, and no repeated description is given herein.
  • the terminal determines, based on a network slice type identifier, an access mode corresponding to a network slice type.
  • the terminal determines, based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through the common access network and the common core network, a network slice corresponding to a network slice identifier, that is, determines that the access mode corresponding to the network slice type is to access the type-C network slice. Therefore, the terminal accesses, by using the access mode corresponding to the type-C network slice, the network slice corresponding to the network slice identifier. For a specific process, refer to the following steps 604 to 608.
  • the terminal establishes a network connection to a second common access network, and gets registered with a common core network.
  • steps 404 to 407 Detailed implementation of this step is the same as steps 404 to 407 described above. For details, refer to steps 404 to 407, and no repeated description is given herein.
  • the terminal determines a service request message.
  • the terminal determines the service request message based on the network service type, where the service request message carries at least a network slice identifier, a user identifier, and the like. Specifically, if the network service type is a packet data connection, it may be determined that the service request message is a packet data establish request; or if the network service type is an SMS service, it may be determined that the service request message is an SMS request.
  • the terminal sends the service request message to the common core network through the second common access network.
  • the service request message includes the network slice identifier, the user identifier, and the like.
  • the common core network determines a network slice corresponding to a network slice identifier, and sends the service request message to the network slice.
  • a common core network control plane (Common (common) CN (Core Network, core network) CP (Content Provider, mobile data service content provider)) sends a second query request to a slice selection function entity.
  • the second query request includes the network slice identifier.
  • the slice selection function entity determines, based on the network slice identifier, a network slice corresponding to the network slice identifier, and sends an address of the network slice to the common core network control plane CN CP.
  • the core network control plane CN CP uses the network slice corresponding to the address of the network slice as a network slice that the terminal needs to access, and sends the service request message to the network slice.
  • the network slice When receiving the service request message, the network slice performs authentication on the terminal.
  • the network slice When receiving the service request message, the network slice obtains the subscription information of the user from a subscriber database (Subscriber data) based on the user identifier. After it is determined based on the subscription information of the user that the terminal is authenticated successfully, the network slice provides the terminal with desired services.
  • Subscriber data Subscriber data
  • the application needs to obtain a network service in a running process.
  • the application may send a network service request to a network protocol stack in the terminal, where the network service request carries at least a network service identifier.
  • the network protocol stack determines a corresponding configuration information database.
  • the terminal obtains access information from the configuration information database, where the access information carries the network service identifier, the network slice identifier, the network slice type identifier, and the like. Based on the access information, the terminal determines an identifier of a network slice that needs to be accessed.
  • the terminal From the security chip, the terminal obtains the PLMN that includes the MCC and the MNC, and based on the broadcast message sent by the access network in the PLMN and the 5G network system, determines the second common access network to be accessed, and further establishes a network connection to the second common access network. Subsequently, the terminal sends a network registration request to the second common access network, and the second common access network sends the network registration request to the common core network.
  • the common core network obtains the user subscription information from subscriber database of the user. When it is determined based on the user subscription information that the terminal is allowed to access the network slice corresponding to the network slice identifier, the common core network performs network registration on the terminal.
  • the terminal When completion of the network registration, the terminal sends a service request message to the common access network, where the service request message carries at least the network slice identifier, the user identifier, and the like.
  • the common access network sends the service request message to the common core network, and the common core network determines, based on the network slice identifier, the network slice corresponding to the network slice identifier, and sends the service request message to the network slice.
  • the network slice performs authentication on the user based on the subscriber database. After the authentication succeeds, the network slice can provide the terminal with desired services.
  • the terminal based on the network service identifier, obtains the access information that includes at least the network slice type identifier, and then accesses the network slice based on the access mode corresponding to the network slice type identifier, thereby avoiding unavailability of the service caused by a failure to correctly access the network slice and improving a network connection success rate and service quality.
  • FIG. 8 is a possible schematic structural diagram of a terminal according to the foregoing embodiment. Terminal can implement functions of the terminal described in the embodiment shown in FIG. 2 or FIG. 4 or FIG. 6 .
  • the terminal 800 includes: an identifier obtaining unit 801, an information obtaining unit 802, a determining unit 803, a network slice access unit 804, and a detection unit 805.
  • Such units may be configured to perform corresponding functions in the foregoing examples of the network access method.
  • the identifier obtaining unit 801 is configured to obtain a network service identifier of a requested network service; the information obtaining unit 802 is configured to obtain access information based on the network service identifier; the determining unit 803 is configured to determine, based on the network slice type identifier, an access mode corresponding to a network slice type; and the network slice access unit 804 is configured to access, based on the access mode corresponding to the network slice type, the network slice corresponding to the network slice identifier.
  • the determining unit 803 is further configured to determine, based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through the dedicated access network and the dedicated core network, the network slice corresponding to the network slice identifier; or the determining unit 803 is further configured to determine, based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through the common access network and the dedicated core network, the network slice corresponding to the network slice identifier; or the determining unit 803 is further configured to determine, based on the network slice type identifier, that the access mode corresponding to the network slice type is to access, through the common access network and the common core network, the network slice corresponding to the network slice identifier.
  • the network slice access unit 804 is further configured to: when the access mode is to access, through the dedicated access network and the dedicated core network, the network slice corresponding to the network slice identifier, and when the access information further includes a dedicated access network identifier, receive a broadcast message sent by at least one access network; determine, in the at least one access network identifier based on the dedicated access network identifier, a dedicated access network identifier the same as the dedicated access network identifier; send a network connection request; establish a network connection to the dedicated access network corresponding to the dedicated access network identifier; and send a network registration request to the dedicated access network.
  • the network slice access unit 804 is further configured to: when the access mode is to access, through the common access network and the dedicated core network, the network slice corresponding to the network slice identifier, establish a network connection to a first common access network; and send the network registration request to the first common access network.
  • the network slice access unit 804 is further configured to: when the access mode is to access, through the common access network and the common core network, the network slice corresponding to the network slice identifier, and when the access information further includes a network service type, establish a network connection to a second common access network; get registered with the common core network; determine a service request message; and send the service request message to the common core network through the second common access network.
  • the terminal 800 further includes a detection unit 805, configured to detect a current network status.
  • FIG. 9 is a possible schematic structural diagram of an access network according to the foregoing embodiment.
  • the access network can implement functions of the access network described in the embodiment shown in FIG. 4 or FIG. 6 .
  • the access network 900 includes a network connection unit 901, a receiving unit 902, a determining unit 903, and a sending unit 904.
  • Such units may be configured to perform corresponding functions in the foregoing examples of the network access method.
  • the network connection unit 901 is configured to establish a network connection to a terminal;
  • the receiving unit 902 is configured to receive a network registration request sent by the terminal;
  • the determining unit 903 is configured to determine a core network corresponding to a network slice identifier;
  • the sending unit 904 is configured to send the network registration request to the core network.
  • the determining unit 903 is configured to send a first query request to a slice selection function entity, and receive a core network address corresponding to the network slice identifier and sent by the slice selection function entity.
  • FIG. 10 is a possible schematic structural diagram of an access network according to the foregoing embodiment.
  • the access network can implement functions of the access network described in the embodiment shown in FIG. 2 .
  • the access network 1000 includes a sending unit 1001, a receiving unit 1002, and a network connection unit 1003.
  • Such units may be configured to perform corresponding functions in the foregoing examples of a network access method.
  • the sending unit 1001 is configured to send a broadcast message to a terminal
  • the receiving unit 1002 is configured to receive a network connection request sent by the terminal
  • the network connection unit 1003 is configured to establish a network connection to the terminal based on the network connection request.
  • FIG. 11 is a possible schematic structural diagram of a core network according to the foregoing embodiment.
  • the core network can implement functions of the core network described in the embodiment shown in FIG. 2 or FIG. 4 .
  • the core network 1100 includes a receiving unit 1101, a determining unit 1102, and a network registration unit 1003.
  • the receiving unit 1101 is configured to receive a network registration request sent by an access network.
  • the determining unit 1102 is configured to determine a network slice corresponding to a network slice identifier.
  • the network registration unit 1103 is configured to perform network registration on a terminal based on a user identifier, so that the terminal can access the network slice.
  • the network registration unit 1103 is further configured to: obtain subscription information of a user based on the user identifier; and perform network registration on the terminal when it is determined based on the subscription information of the user that the terminal is allowed to access the network slice corresponding to the network slice identifier.
  • FIG. 12 is a possible schematic structural diagram of a core network according to the foregoing embodiment.
  • the core network can implement functions of the core network described in the embodiment shown in FIG. 6 .
  • the core network 1200 includes a receiving unit 1201 and a determining unit 1202.
  • the receiving unit 1201 is configured to receive a network service request message sent by a common access network; and the determining unit 1202 is configured to determine a network slice corresponding to a network slice identifier, so that the terminal accesses the network slice.
  • the determining unit 1202 is configured to send a second query request to a slice selection function entity, and receive a network slice address corresponding to the network slice identifier and sent by the slice selection function entity.
  • unit division is exemplary, and is merely a logical function division. In actual implementation, another division manner may be used.
  • Functional units in this embodiment of this disclosure may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units are integrated into one unit.
  • the integrated unit may be implemented in a form of hardware, or may be implemented in a form of a software functional unit.
  • FIG. 13 is another possible schematic structural diagram of a network device 1300 according to the foregoing embodiment.
  • the network device includes: a storage unit 1301, a processing unit 1302, and a communications unit 1303.
  • the storage unit 1301 is configured to store program code and data of the network device 1300.
  • the network device 1300 may be a terminal, an access network, or a core network.
  • the network device 1300 can also implement the functions of the terminal 800 shown in FIG. 2 or FIG. 4 or FIG. 6 .
  • the processing unit 1302 is configured to perform control and management on actions of the terminal 800.
  • the processing unit 1302 is configured to support the terminal in performing steps 201 to 206 and 208 in FIG. 2 , steps 401 to 405 in FIG. 4 , and steps 601 to 603, 605, and 606 in FIG. 6 , and/or is applied to other processes of technologies described herein.
  • the communications unit 1303 is configured to support communication between the terminal 800 and other network entities, such as communication with a function module or network entity shown in FIG. 2 or FIG. 4 or FIG. 6 .
  • the network device 1300 can also implement the functions of the access network 900 shown in FIG. 4 or FIG. 6 .
  • the processing unit 1302 is configured to perform control and management on actions of the access network 900.
  • the processing unit 1302 is configured to support the access network 900 in performing step 406 in FIG. 4 and steps 604 and 606 in FIG. 6 , and/or is applied to other processes of technologies described herein.
  • the communications unit 1303 is configured to support communication between the access network 900 and other network entities, such as communication with a function module or network entity shown in FIG. 4 or FIG. 6 .
  • the network device 1300 can also implement the functions of the access network 1000 shown in FIG. 2 .
  • the processing unit 1302 is configured to perform control and management on actions of the access network 1000.
  • the processing unit 1302 is configured to support the access network 1000 in performing steps 207 and 209 in FIG. 2 , and/or is applied to other processes of technologies described herein.
  • the communications unit 1303 is configured to support communication between the access network 1000 and other network entities, such as communication with a function module or network entity shown in FIG. 2 .
  • the network device 1300 can also implement the functions of the core network 1100 shown in FIG. 2 or FIG. 4 .
  • the processing unit 1302 is configured to perform control and management on actions of the core network 1100.
  • the processing unit 1302 is configured to support the core network 1100 in performing step 210 in FIG. 2 and step 407 in FIG. 4 , and/or is applied to other processes of technologies described herein.
  • the communications unit 1303 is configured to support communication between the core network 1100 and other network entities, such as communication with a function module or network entity shown in FIG. 2 or FIG. 4 .
  • the network device 1300 can also implement the functions of the core network 1200 shown in FIG. 6 .
  • the processing unit 1302 is configured to perform control and management on actions of the core network 1200.
  • the processing unit 1302 is configured to support the core network 1200 in performing steps 604 and 607 in FIG. 6 , and/or is applied to other processes of technologies described herein.
  • the communications unit 1303 is configured to support communication between the core network 1200 and other network entities, such as communication with a function module or network entity shown in FIG. 6 .
  • the processing unit 1302 may be a processor or a controller, such as a central processing unit (Central Processing Unit, CPU), a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA), or another programmable logical device, a transistor logical device, a hardware component, or a combination thereof.
  • the controller/processor may implement or execute various example logical blocks, modules, and circuits described with reference to content disclosed in this disclosure.
  • the processor may be a combination of processors implementing a computing function, for example, a combination of one or more microprocessors, or a combination of the DSP and a microprocessor.
  • the communications unit 1303 may be a transceiver.
  • the storage unit 1301 may be a memory.
  • the network device may be the network device shown in FIG. 14 .
  • the network device includes a processor 1402, a transceiver 1403, a memory 1401, and a bus 1404.
  • the transceiver 1403, the processor 1402, and the memory 1401 are connected to each other through the bus 1404.
  • the bus 1404 may be a peripheral component interconnect (peripheral component interconnect, PCI for short) bus, an extended industry standard architecture (extended industry standard architecture, EISA for short) bus, or the like.
  • the bus may be classified into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used to represent the bus in FIG. 14 , but this does not mean that there is only one bus or only one type of bus.
  • the terminal, the access network, the core network, the network device, or the network access system provided by the foregoing embodiments accesses a network
  • the division of the foregoing function modules is merely used as an example for description.
  • the foregoing functions may be allocated to and performed by different function modules as required. That is, the internal structures of the terminal, the access network, the core network, the network device, and the network access system are divided into different function modules to perform all or a part of the functions described above.
  • the foregoing embodiments of the terminal, the access network, the core network, the network device, and the network access system are based on the same concept as the embodiments of the network access method. For a specific implementation process thereof, refer to the method embodiment, and details are not repeated herein again.
  • the program may be stored in a computer-readable storage medium.
  • the storage medium may include: a read-only memory, a magnetic disk, or an optical disc.

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US11032858B2 (en) 2021-06-08
CN110383896B (zh) 2020-11-10
WO2018176220A1 (fr) 2018-10-04
US20200022193A1 (en) 2020-01-16

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